What Is Modifier TC?
Modifier TC is a HCPCS Level II modifier appended to a diagnostic procedure code to indicate that only the technical component — equipment, supplies, technologist time and overhead — is being billed under the physician fee schedule, not the professional interpretation. Hospital outpatient technical services are paid under OPPS instead, on an institutional claim.
- Keep this mapping and the modifier 26 mapping in sync; they are two views of one decision.
Modifier TC
Also known as: Technical Component Modifier
Modifier TC is a HCPCS Level II modifier appended to a diagnostic procedure code to indicate that only the technical component — equipment, supplies, technologist time and overhead — is being billed under the physician fee schedule, not the professional interpretation. Hospital outpatient technical services are paid under OPPS instead, on an institutional claim.
Definition
Many diagnostic services separate into a technical component and a professional component, the latter billed with modifier 26. Whether a given code splits at all is set by the professional/technical component indicator CMS publishes for each code on the Medicare Physician Fee Schedule; some codes are global-only, some technical-only, some professional-only. The qualifier that matters most is that modifier TC is a physician fee schedule construct. The Medicare Claims Processing Manual states that the A/B MAC (B) “must pay under the fee schedule for the TC of radiology services furnished to beneficiaries who are not patients of any hospital”, and separately that it “may not pay for the technical component (TC) of radiology services furnished to hospital patients”, because “radiology and other diagnostic services furnished to hospital outpatients are paid under the Outpatient Prospective Payment System (OPPS) to the hospital” (Chapter 13, section 20).
Example
Two verified cases, and they are not the same split. First, an independent imaging center performs an MRI on someone who is not a hospital patient: the center bills the technical component on its own professional claim and the reading physician bills the interpretation with modifier 26, both paid under the physician fee schedule, and the two amounts are the two halves of that code’s global fee schedule value. Second, the same study performed on a hospital outpatient produces no MPFS technical payment at all: the hospital reports the service on a 12X or 13X institutional claim and is paid under OPPS, while the reading physician still bills modifier 26 on a professional claim paid under the physician fee schedule (Chapter 13, section 20). Different claim forms, different payment systems, different rate-setting — which is why the hospital case cannot be reasoned about from the independent-center case.
Common Misconceptions
Billing globally when only the equipment and technologist time were furnished leaves the interpreting physician’s component unbillable, and that is a real error — but “who owns the machine” is not the test by itself. Which entity may bill which component depends on what was furnished, the employment or contractual arrangement between the entities, any reassignment of benefits, and the setting: in a hospital outpatient department there is no MPFS technical component to bill in the first place. Verify the arrangement and the setting before choosing a modifier.
Practical Application
Independent imaging centers, sleep labs, cardiac testing centers and pathology labs that are not billing for hospital patients typically report the technical component on their own professional claim while a contracted reading physician bills modifier 26 on theirs. Before submitting, confirm three things per code: the professional/technical component indicator on the Medicare Physician Fee Schedule, the setting — a hospital outpatient service is paid under OPPS on an institutional claim, not as an MPFS technical component — and what the contract between the entities actually assigns to each party. Keep this mapping and the modifier 26 mapping in sync; they are two views of one decision.
Related Terms
Modifier 26
Modifier 26 is appended to a diagnostic procedure code to indicate that only the professional component — the physician’s interpretation and written report — is being billed, while the technical work of performing the study is billed separately, under whichever payment system applies to the setting where it was performed.
Read definitionCPT (Current Procedural Terminology)
CPT is the five-digit procedural code set developed and maintained by the American Medical Association that describes medical, surgical, and diagnostic services performed by physicians and qualified health professionals; it is HIPAA-named for use in claims.
Read definitionUB-04 form
The UB-04 (also known as CMS-1450) is the standard paper claim form used by institutional providers (hospitals, SNFs, home health, hospice) to bill Medicare and other payers; its electronic equivalent is the 837I (Institutional) HIPAA EDI transaction.
Read definitionCMS-1500 form
The CMS-1500 is the paper claim form Medicare prescribes for non-institutional providers (physicians, NPPs, suppliers); its electronic equivalent is the 837P (Professional) HIPAA EDI transaction, and many other payers accept the same form and transaction on their own terms.
Read definitionWhere This Applies on MedPrecision
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